<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Introduction</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="book.rrd.html">RRD</a></div> <div class="next" style="text-align: right; float: right;"><a href="rrd.setup.html">Installing/Configuring</a></div> <div class="up"><a href="book.rrd.html">RRD</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="intro.rrd" class="preface"> <h1 class="title">Introduction</h1> <p class="para"> The PECL/rrd extension provides bindings to the RRDtool C library. RRDtool is the open source industry standard, high performance data logging and graphing system for time series data. </p> <p class="para"> The RRDtool homepage is <a href="http://www.mrtg.org/rrdtool/" class="link external">» http://www.mrtg.org/rrdtool/</a>. </p> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="book.rrd.html">RRD</a></div> <div class="next" style="text-align: right; float: right;"><a href="rrd.setup.html">Installing/Configuring</a></div> <div class="up"><a href="book.rrd.html">RRD</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>